﻿/* 
 * Copyright (c) 2011 Jeff Zhang
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of 
 * this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation the rights to use, 
 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, 
 * and to permit persons to whom the Software is furnished to do so, 
 * subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included 
 * in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

using System;
using System.IO;

using Cipher.Utils;
using CompilerBase = Cipher.Compiler.Compiler;

namespace Cipher.Compiler {
    public abstract class Template : ITemplate {
        /// <summary>
        /// Initializes a new instance of the Template class.
        /// </summary>
        /// <exception cref="Cipher.Compiler.ThemeNotExistsException">Occured the <see cref="Cipher.Compiler.ThemeNotExistsException"/>, 
        /// while the theme directory is not exists.</exception>
        /// <param name="compiler">The compiler, which the template owned.</param>
        /// <param name="theme">The theme name.</param>
        /// <seealso cref="Cipher.Utils.PathUtil"/>
        /// <seealso cref="Cipher.Compiler.Compiler"/>
        /// <seealso cref="Cipher.Compiler.CompileContext"/>
        /// <seealso cref="Cipher.Compiler.ThemeNotExistsException"/>
        protected Template(Compiler compiler, string theme) {
            this.Compiler = compiler;
            this.Theme = theme;

            this.Path = PathUtil.Join(CompilerBase.TemplatePath, this.Compiler.Name, this.Theme);
            if (!Directory.Exists(this.Path)) {
                throw new ThemeNotExistsException(theme);
            }
        }

        public Compiler Compiler { get; private set; }

        public string Theme { get; private set; }

        public string Path { get; private set; }

        public abstract void Render(CompileContext context, Stream stream);
    }
}
